fix(mem): correctly allocate colored pages

[nkosmatov]

fix(mem): correctly allocate colored pages
Fixes Issue #199

[josecm]

@nkosmatov thanks for sending this fix!

The fixes themselves look great. Just a couple of nits regarding the PR itself that I'd ask to change:

• For commit messages we follow the conventional commit scheme. So I'd ask that you replace the messaage with somehting like: fix(mem): correctly allocate colored pages
• We have a coding style enforced by clang-format. You can apply it to your modifications simply by running make format.

[nkosmatov]

Thank you for considering my commit. I am not a Bao developer and I am not used to the conventions. I created the commit from the website github.com and do not see how I can take into account your requests from the current commit. Should I create a new commit with another title? But I do not think that make format can be run from the website? I can try to do if you send me step-by-step instructions. Or maybe a more experienced Bao developer will be able to do the necessary PR properly and it will be faster, as the corrections are very limited.

Edited: I managed to change the message. But I do not see for the make format part.