Increase project icon and colour swatch sizes in project settings

[alyblenkin]

Not high priority or something has come in user feedback. More of a small usability enhancement:

Increase the size of the project icon and colour once it's selected so it's easier to see. More noticeable on a device than the screenshot below. Currently the user needs to go back to the main menu, to see it enlarged or what it will look like - it would be cool if you could preview it on that page, but not necessary.