Cotedazur do you speak Arabic fluently? Are you even Muslim? With all due respect if the answer is no to one or other of these then I would suggest you're not as knowledgeable on this topic as you think you are. The word commonly interpreted as 'bosom' is an archaic Arabic word that is very hard to translate and various translations for the word have been given.
The most logical of these is that the word specifically applies to an open neckline of a dress and that women are to use their headcoverings pulled forward to cover this. Strangely the women at the time of The Prophet peace be upon Him interpreted this, a verse in a language they were fluent in, to mean they should make headcoverings from their existing garments and even furnishings and put them on in such a way that it covers the face and everything else. According to most historians that initial clothing used for veils was black, though later there are ahadith speaking of other colours worn red, white, green, yellow and striped fabrics.
The main reason that black has stood the test of time is that it's a practical colour, black garments stain far less easily than other colours and they show up damage, tears and repairs less. Also in many cultures black is seen as a modest, simple yet elegant colour. It's the same in the orthodox Jewish religion and Christian sects such as the Amish. Another thing is, if looked into historically FULL veiling, in ways you would consider 'extreme' not even showing the eyes was the norm in most Muslim cultures and countries.
The period in which women in Muslim countries were pressured to get rid of the niqab and even the hijab only began in about 1920. It isn't a sudden, new, extreme interpretation at all. In Saudi for example, they used to wear something more similar to the afghan burqa with a mesh for the eyes, so far more all-encompassing than the abayas with scarf and niqab showing the eyes that they tend to wear now. Most countries where they historically wore niqab women no longer do so, at all xx