shēnsè yīfu róngyì diàosè.

Because 深色衣服 is a very natural noun phrase in Chinese, like a compact label meaning dark-colored clothes.

In Chinese, 的 is often omitted when:

• the modifier is short and common
• the phrase sounds like a fixed category
• the relationship between the words is very clear

So both of these are correct:

• 深色衣服
• 深色的衣服

The version without 的 is often more concise and natural in everyday speech.

深色 means dark in color or dark-colored.

• 深 = deep, dark
• 色 = color

So 深色衣服 means clothes that are dark-colored, such as black, dark blue, or dark brown clothing.

A common opposite is:

• 浅色 = light-colored

For example:

• 浅色衣服容易脏。
  Light-colored clothes get dirty easily.

Because 容易 usually comes before a verb to mean be easy to... or be likely/prone to....

Pattern:

• subject + 容易 + verb

So:

• 深色衣服容易掉色 = Dark-colored clothes are prone to losing color / bleed color easily.

If you say 掉色容易, it sounds incomplete or unnatural in this sentence. It would more naturally mean something like for something to lose color is easy, which is a different structure.

Compare:

• 这种布容易掉色。
  This kind of fabric easily loses color.
• 洗这种布时，掉色很容易发生。
  When washing this fabric, color loss happens easily.

So in your sentence, 容易 + 掉色 is the normal pattern.

Literally, 掉色 is:

• 掉 = fall off, drop, come off, lose
• 色 = color

So 掉色 literally means lose color or have color come off.

In real usage, it can mean:

• the color fades
• the dye comes out
• the color runs in the wash
• the fabric bleeds color

So it is a very practical everyday word, especially for clothes, fabric, bags, shoes, and other dyed items.

Example:

• 这件衣服会不会掉色？
  Will this piece of clothing bleed color / fade?

It can mean either, depending on context.

Common possibilities:

• fading from washing, sunlight, or wear
• bleeding/running dye, especially during washing

For clothing care, people often use 掉色 when they mean that the dye may come out and affect other clothes in the wash.

So if you see this sentence on a clothing label or in laundry advice, it often suggests:

• dark clothes may bleed dye
• you should be careful when washing them with lighter clothes

Yes, absolutely.

Both are correct:

• 深色衣服容易掉色
• 深色的衣服容易掉色

The difference is mostly style:

• 深色衣服 sounds more compact and category-like
• 深色的衣服 sounds a little more descriptive

In many everyday situations, native speakers would probably prefer the shorter 深色衣服.

Because 容易 already expresses the idea of tendency or likelihood.

• 容易掉色 = tends to lose color easily / is prone to losing color

So the sentence works perfectly well without 会.

You could say:

• 深色衣服会掉色。
  Dark-colored clothes will lose color / may bleed color.

But that is a bit more direct and less nuanced.

Compare:

• 会掉色 = will/may lose color
• 容易掉色 = loses color easily, is prone to losing color

The original sentence is more natural when giving a general warning or describing a characteristic.

Here it means clothes in general.

Chinese nouns usually do not change form for singular vs. plural the way English nouns do. So 衣服 can mean:

• a piece of clothing
• clothing
• clothes

The exact meaning depends on context.

In this sentence, 深色衣服 is a general category:

• dark-colored clothes

If you want to specify one item, you often add a measure word:

• 一件衣服 = one piece of clothing

If you want to make it clearly plural, context usually does that naturally.

Yes. It is a general statement about a type of thing.

Chinese often makes broad statements very directly, without words like the, some, or in general.

So:

• 深色衣服容易掉色。

naturally means something like:

• Dark-colored clothes tend to lose color easily.
• Dark clothes are prone to bleeding color.

It is similar to other general statements such as:

• 咖啡容易凉。
  Coffee gets cold easily.
• 小孩子容易感冒。
  Children catch colds easily.

Yes, there are a couple of useful details.

• 深色 = shēnsè
• 衣服 = yīfu
• 容易 = róngyì
• 掉色 = diàosè

Two things learners often notice:

1. 衣服
   The second syllable 服 is often pronounced in a neutral tone here, so it sounds like yīfu, not a full yīfú in everyday speech.

2. 容易
   This is pronounced róngyì with tones 2 + 4.

So the full sentence is:

• Shēnsè yīfu róngyì diàosè.

A natural rhythm is:

• 深色衣服 / 容易掉色

That pause helps the sentence sound more natural.