Will I find weird star colors in non-typical stars?
1st photo - Zeta Herculis and Beta Draconis - high metallicity stars. North is to the left and captures the keystone asterism in Hercules in the upper right of the frame and the head of Draco in the lower left. High metallicity stars have more absorption features in their spectra compared to low metallicity stars.
To my eye, they don't exhibit weird color that is different than all the other stars in the frame.
https://en.wikipedia.org/wiki/Metallicity
2nd photo - finder chart with these two stars circled in red.
3rd photo - Omicron Draconis is a star with emission lines in its spectrum. It's an RS Canum Venaticorum type of star and that is one of their defining characteristics. Again, it's color does not stand out as weird.
https://en.wikipedia.org/wiki/Emission-line_star
4th photo - finder chart.
I plan to image other emission line stars after monsoon ends.