[Accessibility] Ability to change the default color of sticky notes

How I can change the default colors for sticky notes so they look better for people with color blindness.

The default color make it really hard create different shapes and notes that can be easily distinguished for people with protanopia. 

UPD: I worked around the problem by using tags on my stickies.

There are some tools for colorblindness in Chrome and in Windows 10.

Many let each user pick their own color wheel depending on the type of color blindness they have.