No discrimination over/UW in any imaging software.
Ok, the cloning or healing tools are good for scatter removal.
ALT/LCLICK a similar area, relocate over scatter particle then LCLICK. It is important to get as close as you can to the area you need to patch so it stays anon.
Removal of blueness can be done in several ways. Mixing, Colour balance, Selective Colour etc. Not sure what the lite program has at its disposal.
Again you can use the clone/healing way or cut & paste.
Colours can be adjustedas above, singularly. Hue & saturation adjustment is useful too, preventing BIZARREness.