I was going to paste the changes in via the GUI in theme settings
Thank you @Randomz !
For anyone following this is the same file created by the GUI under
Theme Configuration > Theme Extensions
You can always add to it.
Just to add. I’m sure your code works perfect but what is posted in this thread is clipped so needs a little work. 
Your are not seeing the vertical and horizontal scrollbars?
If not what browser are you using?
Firefox dev. I have the scrollbars. I’ll check another browser. I had made some override code but it is not as complete as his.
Same in chrome and safari . Same with the copy function on the forum. I guess there is a horizontal limit with the way it was put on the post.
Have you tried it and can you see it all?
Just click the Copy buttom - top right corner of the code - shows when you mouse-over, then paste to a file.
Yes that also works 
Good catch! Try again.
/* Restore pre-26.30 solid button colours for light palette */
/* Danger */
.btn-danger{color:#fff!important;border-color:#d43f3a!important;background-color:#d9534f!important}
.btn-danger:hover,.btn-danger:focus,.btn-danger:active,.btn-danger.active,.open .dropdown-toggle.btn-danger{color:#fff!important;border-color:#ac2925!important;background-color:#c9302c!important}
.btn-danger.disabled,.btn-danger[disabled],fieldset[disabled] .btn-danger,.btn-danger.disabled:hover,.btn-danger[disabled]:hover,fieldset[disabled] .btn-danger:hover,.btn-danger.disabled:focus,.btn-danger[disabled]:focus,fieldset[disabled] .btn-danger:focus{color:#fff!important;border-color:#992020!important;background-color:#bd1e1e!important}
.btn-danger .badge{color:#d9534f!important}
/* Info */
.btn-info{color:#fff!important;border-color:#46b8da!important;background-color:#5bc0de!important}
.btn-info:hover,.btn-info:focus,.btn-info:active,.btn-info.active,.open .dropdown-toggle.btn-info{color:#fff!important;border-color:#269abc!important;background-color:#31b0d5!important}
.btn-info.disabled,.btn-info[disabled],fieldset[disabled] .btn-info,.btn-info.disabled:hover,.btn-info[disabled]:hover,fieldset[disabled] .btn-info:hover,.btn-info.disabled:focus,.btn-info[disabled]:focus,fieldset[disabled] .btn-info:focus{color:#fff!important;border-color:#4299b3!important;background-color:#47b1d1!important}
.btn-info .badge{color:#5bc0de!important}
/* Primary */
.btn-primary{color:#fff!important;border-color:#357ebd!important;background-color:#428bca!important}
.btn-primary:hover,.btn-primary:focus,.btn-primary:active,.btn-primary.active,.open .dropdown-toggle.btn-primary{color:#fff!important;border-color:#285e8e!important;background-color:#3071a9!important}
.btn-primary.disabled,.btn-primary[disabled],fieldset[disabled] .btn-primary,.btn-primary.disabled:hover,.btn-primary[disabled]:hover,fieldset[disabled] .btn-primary:hover,.btn-primary.disabled:focus,.btn-primary[disabled]:focus,fieldset[disabled] .btn-primary:focus{color:#fff!important;border-color:#27557d!important;background-color:#195fa3!important}
.btn-primary .badge{color:#428bca!important}
/* Success */
.btn-success,.cke_dialog_ui_button_ok{color:#fff!important;border-color:#2c8828!important;background-color:#349e30!important}
.btn-success:hover,.btn-success:focus,.btn-success:active,.btn-success.active,.open .dropdown-toggle.btn-success,.cke_dialog_ui_button_ok:hover,.cke_dialog_ui_button_ok:focus,.cke_dialog_ui_button_ok:active{color:#fff!important;border-color:#256d22!important;background-color:#32942f!important}
.btn-success.disabled,.btn-success[disabled],fieldset[disabled] .btn-success,.btn-success.disabled:hover,.btn-success[disabled]:hover,fieldset[disabled] .btn-success:hover,.btn-success.disabled:focus,.btn-success[disabled]:focus,fieldset[disabled] .btn-success:focus{color:#fff!important;border-color:#2c8828!important;background-color:#349e30!important}
.btn-success .badge{color:#5cb85c!important}
/* Warning */
.btn-warning{color:#fff!important;border-color:#eea236!important;background-color:#f0ad4e!important}
.btn-warning:hover,.btn-warning:focus,.btn-warning:active,.btn-warning.active,.open .dropdown-toggle.btn-warning{color:#fff!important;border-color:#d58512!important;background-color:#ec971f!important}
.btn-warning.disabled,.btn-warning[disabled],fieldset[disabled] .btn-warning,.btn-warning.disabled:hover,.btn-warning[disabled]:hover,fieldset[disabled] .btn-warning:hover,.btn-warning.disabled:focus,.btn-warning[disabled]:focus,fieldset[disabled] .btn-warning:focus{color:#fff!important;border-color:#d6963c!important;background-color:#eba94c!important}
.btn-warning .badge{color:#f0ad4e!important}
/* Grey */
.btn-grey{color:#fff!important;border-color:#474747!important;background-color:#5c5c5c!important}
.btn-grey:hover,.btn-grey:focus,.btn-grey:active,.btn-grey.active,.open .dropdown-toggle.btn-grey{color:#fff!important;border-color:#474747!important;background-color:#4a4a4a!important}
.btn-grey.disabled,.btn-grey[disabled],fieldset[disabled] .btn-grey,.btn-grey.disabled:hover,.btn-grey[disabled]:hover,fieldset[disabled] .btn-grey:hover,.btn-grey.disabled:focus,.btn-grey[disabled]:focus,fieldset[disabled] .btn-grey:focus{color:#fff!important;border-color:#474747!important;background-color:#5c5c5c!important}
.btn-grey .badge{color:#5c5c5c!important}
/* Default */
.btn-default{border-color:var(--border-color-input)}
.btn-default:hover,.btn-default:focus{border-color:var(--border-color-input)!important;background:#f2f2f2!important}
/* Bootstrap overrides */
.table .btn-danger{color:#fff;border-color:#d43f3a;background-color:#d9534f}
.table .btn-danger .badge{color:#d9534f}
.table .btn-info{color:#fff;border-color:#46b8da;background-color:#5bc0de}
.table .btn-info .badge{color:#5bc0de}
.table .btn-primary{color:#fff;border-color:#357ebd;background-color:#428bca}
.table .btn-primary .badge{color:#428bca}
.table .btn-success{color:#fff;border-color:#2c8828;background-color:#349e30}
.table .btn-success .badge{color:#5cb85c}
.table .btn-warning{color:#fff;border-color:#eea236;background-color:#f0ad4e}
.table .btn-warning .badge{color:#f0ad4e}
Great! Thank you for the override code. More complete than mine!
Ah ok, now understand what you meant. I thought you were not seeing the scrollbars.
Glad Randomz fixed it up