The Metro Blue Line is in for an upgrade. Over the next several years, Metro will invest more than $850 million for 78 new train sets and to the renovation of 52 train cars. New cars will take on an appearance different from that of current ones, as they will be mainly gray (rather than white with a yellow stripe) with bright yellow fronts and backs. Of the funds for this upgrade, $13 million will go toward new overhead power lines, which flatten with use, causing power shortages and outages. Also, much excitement abounded when it was reported that the contractors in charge of building the Gold Line extension to Azusa installed the first station canopies. The construction authority behind the project hopes to open the line as early as 2015. Meanwhile, the same agency also issued a request for proposals for engineering work on the Montclair extension of the line.