daily entry 12/2

Hay muchos colores en mi casa. ("To be" in the sense of "There are" in Spanish is translated as the verb "Haber")

Las ventanas son azules y blancas —ventanas is a "female" nom, as "puertas" (doors), "paredes" (walls), "sillas" (chairs); therefore you need to match the genre of the adjective that describes it... " las ventanas blancas", "las Paredes rojas" (red walls).."la Puerta blanca"

"Lámpara" is as well a "female" nom ;), therefore it also follows what I said before --> "La lámpara es negra y blanca"

If you meant something like "the table has coffee" or "there is coffee on the table", you may rather say "La mesa tiene café" or "hay café en la mesa"

"Tengo muchas pinturas vistosas" is more correct, however, if you mean "paintings", you may rather want to say "cuadros". "Tengo muchos cuadros vistosos" - -- attention, "cuadros" is a male nom, so the adjective follows its genre (male nom -> male adjective) . Example: "los cuadros vistosos"

"Mis amigos hacen algunos cuadros", the same as before. "Hago algunos cuadros" or "Hago algunas pinturas"

-Hope it helps! ;)