This hoverboard doesn't have any unlockable upgrades.
Chameleon is the thirty-seventh limited hoverboard in Subway Surfers and a limited hoverboard exclusive to Subway Surfers World Tour: Madagascar. Like any other hoverboard, it protects you from crashing for 30 seconds and needs to recharge before it can be used again. It is a wooden board on which a sketch of a chameleon is drawn in order to reflect the theme of the update. The special thing about this board is its graphics and animation. The board changes its color in a rainbow pattern. It costs 50,000, like most of others limited hoverboards.