Feature/enhancement of pink buttons

[Mubashirshariq]

Fixes #2823

Changes:
1)changed the colour of solid pink button on hovering to p5jsActivePink
2)Added a new darkish yellow colour as p5jsActiveYellow
3)changed the colour of solid yellow button on hovering to p5jsActiveYellow in contrast theme

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

[lindapaiste]

The code looks good 👍 The shade of yellow might be a bit too dark? I'll compare it with the one in #2827 and see if one better than the other.

In the future please make sure that you start a new branch from develop when working on a different feature so that you don't include commits from your other PRs.

In this case your other PR was good to go so I merged that one into develop which means that those files don't show up as changes anymore.

[Mubashirshariq]

@lindapaiste sure thanks for the feedback

[raclim]

Thanks for your work on this! I ultimately merged in #2883 to address this issue, so I'm going to close this one! I'm sorry that we couldn't get this in, but please feel free to check out our other issues, thanks again!