Added red tints to the following classes to make them streamlined with the rest of the cast
- Assassin
- Heavyblade
- Dancer
- Bruiser
- Spellsword

- Made the color column in colors.csv a bit brighter
* This makes the float circle and HP bar brighter compared to the near pitch-black shade it had before

- Made the red tint of the skill effects a bit brighter.

- Updated thumbnail to reflect the changes above

some silly fixing