Gohvan, The Deranged Painter (Looking for suggestions on improvements)

Gohvan is a twisted painter with split personalities who utilizes a dagger-like paint brush and a palette bringing his creations to life and his enemies to their grave.

Passive: Alter Ego -Gohvan has the ability to alternate between 3 types of paint (red, blue, or green) which he can select by remaining still and out of combat for 2 seconds. After which Gohvan will actively change colors every 2 seconds until you have made your selection by simply moving Gohvan. (To put it easier, it would be like Teemo meets Shulk from Super Smash Bros Wiiu).

In addition, the paint toggles Gohvan's abilities, and his passive goes on CD for 30 seconds.

Q- Abstraction Gohvan projects paint from his palette in a straight line dealing scaling AP damage. If Gohvan hits a champion he receives a buff based on its color.

Augment: Red: Gohvan receives a 10% increase in Ability power for 2seconds Blue: Gohvan receives a shield equal to 10% of his health lasting 2 seconds. Green: Gohvan and target Ally receive a 10% increase in attack speed for 2 seconds

W- Extract Gohvan extracts the paint from his surroundings to summon a shadow on the ground dealing a decent amount of AP damage, and reducing the CD on Vantage point by .25 seconds for each enemy hit.

E- Vantage Point Passive: All of Gohvan's other abilities create a stack of Vantage (stacking up to 4) that when detonated would deal scaling AP damage. Active: Gohvan dashes to target location, if he hits an enemy champion he passes through them detonating Vantage Stacks.

Augment: Red: Upon detonation, Gohvan stun all enemies for 1 second Blue: Upon detonation, Gohvan silences all enemies hit for 1 second Green: Upon detonation, Gohvan slows enemy champions by 25% for 1 second.

R- Masterpiece Gohvan creates his own masterpiece using the terrain around him creating an AoE dealing damage per second and lasting a total of 3 seconds.

Augment: Red: During Masterpiece, all enemies receive 1 stack of Vantage per second. Blue: During Masterpiece, all enemies are slowed by 40% for 5 seconds Green: During Masterpiece, all nearby allies are healed for a portion of the damage being done.

I appreciate all comments, question, or concerns please let me know! Thanks!