Like, come on. Seriously?

Okay, so I know that I have voiced displeasure about my job in the past, but for the most part I really don't have a problem with it. Heck, since I started back with the Sign Guys I've been having a better couple months, and for no real specific reason. But today was just mind-boggling.
We are working at Zellers right now, installing their new sign scheme, and part of what they are doing is changing everything to red. Before each section had its own colour of border on the wall and colour scheme, but now they would all be red. It actually does look quite a bit better than it did. But part of it involves what is known as 'bird beaks'. In their 'neighbourhood market' section (where they sell groceries and beauty products), they have aisle directories saying the aisle number and what is in the aisle. These directories are triangular, kind of like this : >, where the straight line is the rack, and the arrow is the aisle directory (that's an overhead view). The old colour scheme involved these 'beaks' being a truly bad green. So now they have to be switched to red. Their solution was to have people paint them red. This is a pain, especially since most stores don't actually have anywhere that is set up for painting, i.e. no ventilation (which is probably not the best thing when you are dealing with PAINT FUMES), so it is hard to paint. A few stores we have flat out refused because we are not being paid to inhale these fumes and develop cancer and die. We just don't like Zellers that much.
But today's store begged us to get it done. They were having all of the highest mucky-mucks coming to see the store the next day and they wanted the new sign package to be completely finished. So we made them find us a place that was very well ventilated and we went to work. Of course, by doing this, it put us behind on finishing the other stores (it probably cost us four hours between getting set up and actually doing the work). Not to mention the other irritants that go with painting, such as coming out of it looking red, stained clothing, etc. Plus sore fingers because we were just using cans of spray paint. All in all doing the painting was something none of us were all the keen on doing. But the wanted it done, so we did it.
As we are finishing, I find out that in a month or two, new beaks are being sent to every store, these ones already red. I almost quit right there. Basically, all of the hassle and extra time (extra time that they paid for), as well as the cost of paint and gloves and masks, was all for nothing. The paint will barely be dry and they will be changing it all. Or we will be if they make us do it.
Why did they want this done? Couldn't they have lived with the green for a couple more weeks? Or just wait until these new beaks were ready before putting up the new signs. I would gladly have changed them before I painted them, any time. I just don't get it.
How do these corporations continue to function?
For those of you expecting a Home Depot story, fear not! I have a quick one - a Home Depot in Abbotsford has been scheduled for a refit (getting new signs), and our company was given the PO number for that, which means we have the contract. A guy of ours went to BC to do some other work, and while he was there he had to go get some stuff, so he went to this Home Depot. We received a call from him that day asking us why the store was already done. Apparently someone had gone in and done the store already. That means either Home Depot went and gave out two separate contracts for this job, or someone went in and did the work without a contract. Either way, that is not good. So now we have the president of Home Depot telling us that this was a mistake and that it shouldn't have happened, which is information we already had. Seriously, they should be bankrupt by now, given how things seem to be run there.
Anyway, I've got to go sleep now, we have to go back to the Zellers and put the painted beaks back on the racks so that they can take them down next week and throw them away.
Oi.