Here is a list of themes that work well in the ECG SeaSurf 2017 web browser for Windows (upcoming SeaSurf Linux most themes will work).
Twenty Ten (perfect)
Dara (OK)
Libre 2 (OK)
TextBook (OK)
Ixion (OK)
Karuna (perfect)
Twenty Sixteen (perfect)
Shoreditch (incompatible)
Affinity (perfect)
Pique (incompatible)
Libretto (OK)
Rebalance (OK)
Twenty Twelve (perfect)
Franklin (OK)
Sapor (perfect)
Chateau (perfect)
Button (perfect)
Twenty Thirteen (perfect)
Twenty Eleven (perfect)
Theme list is still in BETA. If you feel like there is a theme you need to know about, then please let me know in the comments.
Epic Chas Gamer 😀