This quest runs from 04/11/17 - 4/13/17. Color keys are here again. Completing step 3 checks off the step in the mega quest.
For newer players, if you can afford the mermaid spins, the color keys quests are an excellent way to grow your fleet and get more equipment. The most cost effective way to use your coins is to spin the coin kelp spin (cheapest coin cost spin) until you get a free spin. Then find a premium key garden for your free spin. If you cannot afford to do enough spinning in one quest, save your keys until you accumulate enough to do a complete quest. Current recommendation is that it takes 2000 to 2500 to complete a color key quest now, but as usual with PG, results will vary widely.
Final Reward is Jugendstil Style Ship