color the overhead between red and green

[basnijholt]

Description

The color of the reported overhead will change to red if it's bad and to green if it's good.

Checklist

• Fixed style issues using pre-commit run --all (first install using pip install pre-commit)
• pytest passed

Type of change

Check relevant option(s).

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

[codecov-io]

Codecov Report

Merging #252 into master will decrease coverage by 0.03%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master    #252      +/-   ##
=========================================
- Coverage   79.54%   79.5%   -0.04%     
=========================================
  Files          32      32              
  Lines        4399    4402       +3     
  Branches      809     809              
=========================================
+ Hits         3499    3500       +1     
- Misses        774     777       +3     
+ Partials      126     125       -1

Impacted Files	Coverage Δ
adaptive/notebook_integration.py	18.18% <0%> (-0.43%)	⬇️
adaptive/learner/learner2D.py	78.38% <0%> (+0.36%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9529398...656bb56. Read the comment docs.

[jbweston]

LGTM