The TooWaBlue theme can be easily modified to match your prefered eye-catching color.
Open TooWaBlue.css in any text editor. At the top you’ll find the following text.
/*** Change me *** rgb(red,green,blue) *** allowed values from 0 to 255 for each color ***/
@define-color accent-color rgb(35,99,166); /*** Highlight/selected color for List, Dropdown menu, Borders ... ***/
@define-color text-hl-color rgb(210,210,210); /*** Highlight/selected text color ***/
@define-color accent-color2 rgb(35,99,166); /*** Slider, Progressbar, Scrollbar, Tab indicator ***/
@define-color accent-color3 rgb(35,99,166); /*** Selected thumbnail background color ***/
@define-color text-hl-color3 rgb(210,210,210); /*** Selected thumbnail text color ***/
/*** Change me end *********************************************************************************/
Simply change the numbers to the numbers of your favorite color. Save it → finished.
I’ve done this for you: 
To use the new theme, you have to update your current version of RT to version 4.2.927
Here is a modified version of the TooWaBlue theme in grey.
Download and copy it into the theme folder.
Start RT and open Preferences.
Select TooWaGrey and restart RT.
