[Feature] Show colored output images

[Udayraj123]

Is your feature request related to a problem? Please describe. Currently OMRChecker converts the image into Grayscale for efficiency purpose. But this results in the output images to be grayscaled as well.

Describe the solution you'd like We can change the code to carry a colored copy of the original image and use it for showing debug outputs (while still processing the image in grayscale to maintain the efficiency)

• For previewing colored output images you may need to modify the code a bit - resize the colored image and pass it as an additional argument to the show util.

Describe alternatives you've considered NA

Additional context These images would look better if we get them back in original colors