Architects – These Colours Don't Run lyrics

^ the above comment pegs it down.
The point is that humanity is stopping itself in its tracks by creating a solid, secure way of life - one which is free from collapse but ultimately stifling and frustrating, not to mention isolated and prone to collapse due to arrogance.
If you don't let your "colours run", then how do you expand, learn, evolve? Letting go and exploring the unknown, and meshing in with it, leads to messes and mistakes, dirty "colours", but also allows you to discover better and more beautiful "colours".
Essentially, what is life without risks, and embracing that which we find frightening and uncertain to discover new paths, new ways of thinking? Even though we're here with no objective, that leaves us with the endless possibility of doing whatever we want, making each life our own, spreading the potential to others.
And what is life when we cut ourselves off from others, and our feelings and dreams? We live in not only social and physical security, but emotional security, too.
Many of us are becoming tired of a mapped-out existence which is thrust upon us aggressively.
Solve it by reaching out, loving, being true to yourself, and dreaming, doing whatever makes you feel expanded, fulfilled and at peace, and make sure others can experience this joy, too.