Will painting the top floor red cause problems?
Painting it fully red will cause problems. But where Mars-related work is done, such as loading and unloading in warehouses, red is used so that the labourers work fast.
Related questions
A bone was found on a plot meant for an industry. What must be done before building there?
Removing the bone is not enough; the land needs its rites, just as a house is purified after a death. Do a vastu registry with five coconuts (four corners and the bone spot), remove the affected soil, do agni sanskar with mango wood, ghee and camphor in 16 places and float the ash in flowing water, purify with water and mantra, sprinkle gomutra and plaster with cow dung, put lime and sulphur in the pit, keep a lamp burning there for 24 hours, and mix a little mercury into the soil and the four corners. If the shilanyas had already been done, it is broken and must be redone after purification.
A shop shutter has to be painted with oil-based paint. What should be done?
Oil-based paint is not compulsory even for a shutter. If it has already been used, spray desi cow urine on it once.
An 80 x 50 shed has its floor sloping North but its roof sloping West. Is that fine?
No, the westward roof slope is wrong. It disturbs the energy current, so some trouble will persist there, and the roof slope has to be corrected.
Businesses and homes mostly use mixed colours. Should the zones still be followed?
Mixed colours are normal; a business uses several colours in its logo, flex, sign board, letterhead and visiting cards. Which colours to take from the kundali for business, study, spirituality and luck, and how to balance one's direction and element, is taught in the astro-vastu part.
Can a bedroom be made at Shikhi (E1), and why should it be white rather than red?
Yes, a bedroom at Shikhi can suit elderly people, and it should be painted white rather than the zone's red colour, as advised for people of kapha nature and for those of pitta nature whose heat rises quickly. Shikhi is highly sensitive and already hot, so red would add heat and open the third eye.
Can a false ceiling be painted blue, and will it cause problems?
Light sky blue that matches the colour of the sky can be used and causes no problem. If the blue is dark, paint small twinkling stars on it to nullify its effect.