CI fails on this PR as it currently stands:

https://dev.azure.com/pyqtgraph/pyqtgraph/_build/results?buildId=259

Looks good to me; I agree with @titusjan's assessment in #792. Unit tests in pyqtgraph/tests/test_functions.py : test_makeARGB() will need to be updated to reflect the change, and we definitely want a CHANGELOG entry noting the behavior change.

https://dev.azure.com/pyqtgraph/pyqtgraph/_build/results?buildId=347 still failing

I fixed the test cases so they now pass; not exactly sure what should be stated in CHANGELOG specifically. I'm going to leave the CHANGELOG update to be handled by #1005

All the CI failures are conda/conda-forge related issues, and a fix is pending in PR #991

I'll merge this when the CI run is finished given that @campagnola has already given this code change his blessing

Sorry for my lack of response on this and thanks for fixing the tests.

Don't sweat it, thanks for the PR and the analysis you did in #792

Does that indeed fix #792? As it is still open. If so, I would put exactly that in CHANGELOG.

Yeah I meant to close it, my mistake.