Seems pretty basic to me. Have you seen the instructions?
Use Markup on your iPhone, iPad, or iPod touch - Apple Support
Perhaps you saw this at the lower right:

It says that you choose the shape, then choose the border color,

and then choose the fill color. I'm choosing a red border with a clear fill.
I got this:

As Alancito points out, we are not Apple; we are just users like you. Some of us hang around here from time to time in case our experience may help someone. We don't get paid and we don't have a schedule, and leaving an angry post won't encourage us to offer any help. Frankly, most people just let posts with this tone go by.
Here's a hint: when you ask someone for help, Apple, or anybody, really, you're more likely to get results by being polite and serious, and clearly stating your concern. Lay it out clearly and concisely, and include any details and maybe nicely sized screenshots that will help someone help you. Remember that the person who reads your post probably is in no way connected with the cause of your rant.