Hi,
Sorry that you are seeing problems with Darkest Dark Theme.The Darkest Dark theme is not supposed to cause a slow down of Eclipse, sorry that it did not work for you.
1. Can you please share with us more details about the problems you faced with the Darkest Dark theme to help us investigate further and fix any issues? Please also share with us your OS and Eclipse version details.
2. Uninstalling the Darkest Dark theme should remove the color settings for code editors as well. Can you please go to Window > Preferences > General > Appearance page and check which ‘Theme’ is selected? By default, ‘Windows’ should be selected. If ‘Windows’ is already selected, then click ‘Apply’ and ‘OK’ and check if the editor color settings are reset.
3. If the issue persists, then please try switching to a different theme in the Appearance page, restart Eclipse and check if it fixes the issue with the code editors.
4. If none of the above suggestions work, then please switch to a new workspace and check if the issue persists.
We are investigating the issue with code editor settings to see if we can reproduce at our end.
Apologies for inconvenience caused. Please let us know how it works for you.
–Swapna
MyEclipse Support