Color accessibility

[Tymek]

Describe your feature request
App is hard to use for me because of its color scheme. I have a learning disability, and I find it hard to focus when working in UI with highly saturated colors. Especially when combined with low text contrast.

Check a11y guidelines for contrast, for example score of:

• button https://contrastchecker.com/?c=FFFFFF&b=E900B4
• light theme number in editor https://contrastchecker.com/?c=00dbff&b=ffffff

UI should at least have an option to use theme that is more accessible. Kudos for adjustable font size, it is very helpful.

Are you willing to contribute this feature?
Maybe 🤷🏻‍♂️
Looks tough, because I recognize color is related to branding.