poster colours

I thought i could change the colours around and have the text that had the colour change to black and change the background to the colour of the text.

What i had forgotten i had done is i had put the circles round the equipment needed to be safe the same colour as the text so i have lost my circles but i do like how it has turned out.

I don't particually like the red but with the other 3 colours it goes nicely.

The only thing is the light grey is to light?? so i need to change that and possible make some of the colours more vibrant.